Road sobapeb



(No Model.) a sheets sh eet 1.

M. E. COOK. ROAD $011 533.. No. 296,138. Patented-Apr. 1, 1884.

N. PETERS FMO-Lilhognphar. Wahinglml. at.

MARCUS E. COOK, CFWALLI GFCRD, CONNECTICUT.

ROA'D-S-CRAPER.

SPECIFICATION forming part of Letters Patent No. 296,138, dated April 1,1884.

Application filed November 10, 1883. (A model.)

To all whom it may concern Be it known that I, MARCUS E. COOK, of

Wallingford, in the county of New Haven and State of Connecticut, haveinvented a new Inr provementlin Road Scrapers; and 1* do here by declarethe following, when taken in connection with the accompanying threesheets of drawings and the letters ofreference marked thereon, to be afull, clear, and exact description of the same, and which said drawingsconstitute part of this specification, and rep resent, inl Figure 1, atop or plan view of the apparatus; Fig. 2, a side view; Fig. 3, atransverse section in front of the scraper; Fig. 4, a trans 3 versesection through the rocker. h a This invention relates to an improvementin apparatus for leveling road-surtaces that is a to say, a scraperwhich is arranged upon a frame set onwheels, so that as the apparatus isdrawn over the surface of the earth the scraper levels or evens thesurface over which it is drawn. made adjustable to different angles tothe path These scrapers require to be i w tached to a longitudinalrocker, D. This rocker is supported on a fifth-wheel,.E, resting on theforward axle, F, which carries the forward wheels, G G, and to which thedrawing power f y to move the apparatusis applied. About midway of thelength of the frame-that is, be-

tween the front and rear wheels-a vertical .abutmenlsH, is hung upon apivot, a, and so asto be turned upon said pivot in a horizon- .talplane, but held in its bearings so as to prevent vertical movement orchange of elevation with relation to the frame. At the lower edge ofthis abutment H a toothed segment I, is fixed, concentric with the axisa, upon which the abutment will turn.

L is a vertical shaft, arranged in suitable bearingsiu the frame, andcarrying at its lower end a pinion, M, corresponding to the teeth of thesegment I, and so as to'work therein. On the upper end of the shaft is ahandwheel, N, by which the pinion may be turned to correspondin gl yturn the segment and abutment H. In front of the abutment is a scraper,,1 Near each end this scraper is attacliedto a vertical sliding rod, B.These rods work freely up and downthrough bearings in the abutmentframe.The scraper is attached to the rods by a pivot, as at (Z. (See Fig. 2.)h

To the abutment-frame levers S T are hung upon their respective fulcrumsef, their inner ends free, their outer ends connected by a rod, h, tothe scraper, so that by depressingeither lever-say S, Fig. Iii-that endof the scraper will be raised, as seen in broken lines; or if the otherlever be depressed, that end of the scraper will be raised accordingly;or-if both be depressed, then the scraper will. be raised bodily. Byturning the hand-wheel N,the segmentl,withtheabutmentH,iscorresponolingly turned, and because the scraper is inconnection with or bears against the forward surface of the abutment itwill be COII6SpOllldlLlgly turned, so that the scraper may be turned,say, from one angle (indicated in broken lines, Fig. l) to the oppositeangle, (indicated by broken lines, same figure,) and in so turning thescraper the levers in connectiourwith it are correspondingly turned, sothat they are always in the same relative position to the scraperforoperation. The operator can stand upon the platform in rear of theabutment and over the segment, and there can operate the hand-wheel andthe levers, as occasion may require. The abutment is sustained by asegment, 2', (see Fig. 1,) which corresponds toits circular edge, thesegment supported by braces Z from the rear axle, the lower bearing forthe shaft L being made as apart of the segment 1 2 Thus the thrust istaken directly to the rear axle, and because of the adjustable abutmentfor the scraper it is always firmly-held, and none of the mechanism inconnection with the scraper and necessary for its adjustment changes itsrelation to the scraper in such adjustment, the whole mechanism of thescraper being moved with it in changing its angle to order that suchrocking or change of position to the forward axle may not-interfere withthe level, of the frame which carries the scraper, I make the rocker Dto stand in a position longitudinally central to the carriage, as seenin Fig.1. Theundersideofthisrockerisrounded,

and is of a length to bear upon the front and rear sides of thefifth-wheel E, and through this rocker the king-boltm is arranged.Therefore the rocker only has a bearing in a longitudinal central line.This will permit the forward axle to turn out of level in eitherdirection, according'to the unevenness of the ground, as seen in brokenlines,\vithout material effect upon theposition of the frame whichcarries the scraping mechanism, which cannot be the case when atwo-plate fifth-wheel is employed, or a transverse bearing of anyconsiderable length be made upon the forward axle.

By this construction ofscraper the angle as to direction of movement orelevation is easily adjusted and held in such position, and thatposition is not liable to be changed by the irregularities of thesurface of the ground over which the forward wheels are obliged totravel.

I claim 1. In a road-scraper, the frame supported upon an axle carryingwheels at the rear, and an axle carrying wheels at the front,a'transverse abutment arranged upon said frame on a vertical axis, andmade adjustable on said axis to change the angle of the abutment withrelation to the direction in which the apparatus is drawn, a scraper infront of and so as to bear against said abutment and partake of itsadjustment in a horizontal plane, said scraper adjustable verticallyindependent ofsaid abutment, substantially as described.

2. In a roadscraper, the combination of the frame supported upon'wheelsat the front and rear, an abutment hung to the frame between the frontand rear wheels upon a vertical axis, a toothed segment in connectionwith said abutment, a shaft and pinion working into said segment,whereby said segment and abutment may be turned to varying angles, ascraper arranged in front of said abutment and made adjustable thereon,substantially as described.

3. In a road-scraper, the combination of the frame supported upon wheelsat the rear and front, an abutment arranged upon a vertical axis in saidframe between the front and rear wheels, a toothed segment in connectionwith said abutment, a shaft and pinion workingin-l to the teeth of thesegment, a scraper arranged in front of and so as to bear against saidabutment, with a lever hung upon said abutment at each side, each leverin connection with its respective end of the scraper, substantially asdescribed.

4. In a road-scraper, the combination of a frame supported upon an axlecarrying wheels at the rear, and an axle carrying wheels at the front, atransverse abutment hung upon a vertical axis in said frame and madeadjustable on said axis to different angles to the direction in whichthe apparatus is drawn, but held in its bearings to prevent change ofelevation with relation to the frame, a fixed segment, 1', in rear ofsaid abutment,the axis on which the abutment turns being the center ofsaid segment, said segment supported by braces 11, substantially asdescribed.

5. In a road-scraper, the combination of a frame arranged upon wheels atthe rear and front, and carrying an adjustable scraper between saidfront and rear wheels, the frame at the front provided with alongitudinal rocker, D, resting in a longitudinal central .line upon thefifth-wheel of the forward axle,

and the king-bolt through said rocker, fifthwheel, and axle, said rockerrounded uponits under surface, substantially as and for the purposedescribed.

MARCUS E. COOK. WVitnesses:

. CHARLES G. HULL,

W. B. HALL.

